// Opacity

.opacity(@opacity) {
    opacity: @opacity;
    // IE8 filter
    @opacity-ie: (@opacity * 100);
    filter: ~"alpha(opacity=@{opacity-ie})";
}

// Clearfix
//
// For modern browsers
// 1. The space content is one way to avoid an Opera bug when the
//    contenteditable attribute is included anywhere else in the document.
//    Otherwise it causes space to appear at the top and bottom of elements
//    that are clearfixed.
// 2. The use of `table` rather than `block` is only necessary if using
//    `:before` to contain the top-margins of child elements.
//
// Source: http://nicolasgallagher.com/micro-clearfix-hack/
.clearfix() {
    &:before,
    &:after {
        content: " "; // 1
        display: table; // 2
    }

    &:after {
        clear: both;
    }
}


.user-select(@value) {
    -webkit-user-select: @value; /* Chrome all / Safari all */
    -moz-user-select: @value; /* Firefox all */
    -ms-user-select: @value; /* IE 10+ */
    user-select: @value; /* Likely future */
}
